Fieldline Women's Internal Frame Day 1/2 Pack Spacious main compartment, deluxe padded back and ergonomically designed yoked shoulders and waist strap, which were designed with the huntress in mind Convenient front compartment is outfitted with a 3-pocket organizational feature Lower front organizer pocket as well as left and right accessory pockets with zipper closures Hydration compatible. Bladder sold separately Ultra-quiet zippers